.\" -*- nroff -*-
.\" Copyright 2010 Cisco Systems, Inc.  All rights reserved.
.\" Copyright 2006-2008 Sun Microsystems, Inc.
.\" Copyright (c) 1996 Thinking Machines Corporation
.\" $COPYRIGHT$
.TH MPI_Comm_call_errhandler 3 "Jun 10, 2020" "4.0.4" "Open MPI"
.SH NAME

\fBMPI_Comm_call_errhandler\fP \- Passes the supplied error code to the
error handler assigned to a communicator

.SH SYNTAX
.ft R

.SH C Syntax
.nf
#include <mpi.h>
int MPI_Comm_call_errhandler(MPI_Comm \fIcomm\fP, int \fIerrorcode\fP)

.fi
.SH INPUT PARAMETER
.ft R
.TP 1.4i
comm
communicator with error handler (handle).
.ft R
.TP 1.4i
errorcode
error code (integer).

.SH OUTPUT PARAMETERS
.ft R
.TP 1.4i
IERROR
Fortran only: Error status (integer).

.SH DESCRIPTION
.ft R
This function invokes the error handler assigned to the communicator
\fIcomm\fP with the supplied error code \fIerrorcode\fP. If the error
handler was successfully called, the process is not aborted, and the
error handler returns, this function returns MPI_SUCCESS.

.SH NOTES
.ft R
Users should note that the default error handler is
MPI_ERRORS_ARE_FATAL. Thus, calling this function will abort the
processes in \fIcomm\fP if the default error handler has not been
changed.

.SH ERRORS
.ft R
Almost all MPI routines return an error value; C routines as
the value of the function and Fortran routines in the last argument. C++
functions do not return errors. If the default error handler is set to
MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism
will be used to throw an MPI::Exception object.
.sp
See the MPI man page for a full list of MPI error codes.

.SH SEE ALSO
.ft R
.nf
MPI_Comm_create_errhandler
MPI_Comm_set_errhandler

